motnot,
My guess has to be that the email I received is targeted at those people who get email but didn't get the previous bonus (a catagory I didn't fall into.) I don't know why the (secure) link that I included didn't show up, but you can go to
http://www.nwa.com/email/email_mod.html
and try again. My miles originally took about 6 weeks to post, if I remember right.